Patented Carbon composite crank arms One-piece crankarm/spider. Precision CNC machined 7075/T6 chainrings, ramped and pinned for perfect shifting. 104/64 BCD. 44x32x22 teeth. Four-arm spider. Lengths: 170, 175mm. 7075 Torx T-30 alloy chainring bolts. Q-Factor: 168mm.
